Daikin RXSQ24TAVJU, Service Manual

Page: 150 / 311

Test Operation SiUS331708EA
137 Field Settings and Test Operation
UA Defective indoor unit connection or mismatched
models (R-410A, R-407C, RA, Hydrobox, etc.). Check if there are any other defective indoor
units and verify if the indoor unit combination
meets requirements.
Defective indoor unit connection or mismatched
models (R-410A, R-407C, RA, Hydrobox, etc.). Check if there are any other defective indoor
units and verify if the indoor unit combination
meets requirements.
Wrong combination of units (multi-unit system) Check the compatibility of unit types.
Wrong combination of units (multi-unit system) Check the compatibility of unit types.
Gas furnace connection error Check that two or more "CXTQ-TA + gas
furnace" and other indoor units other than CXTQ-
TA are not connected.
UF Defective automatic addressing (inconsistency) Check if the quantity of connected units is below
the maximum number of units that can be
connected (through monitoring mode) or if
initiation is complete.
Stop valve closed or defective (During system
test operation) Open the stop valve.
UH Defective automatic addressing (inconsistency) Check if the quantity of connected units is below
the maximum number of units that can be
connected (through monitoring mode) or if
initiation is complete.
No display Error in connection/communication among
indoor unit remote controllers. Check if there is any disconnection or loosening
of connectors.
UH-05 Climate Talk Communication System
Combination Error (Before Initial Setting for
Communication Completes) Power on the gas furnace.
Check the Climate Talk transmission wiring.
Check if unconnectable unit is on Climate Talk
transmission wiring.
(CXTQ-TA must have only one gas furnace
certified with CXTQ-TA on the Climate Talk
circuit)
UH-06 Climate Talk Communication System
Combination Error (After Initial Setting for
Communication Completes) Check if unconnectable unit is on Climate Talk
transmission wiring.
(CXTQ-TA must have only one gas furnace
certified with CXTQ-TA on the Climate Talk
circuit)
C1-08 Climate Talk Communication Error Power on the gas furnace.
Check the Climate Talk transmission wiring.
Do not expose the Climate Talk transmission
wiring to electrical noise.
A0-01 External Protection Device Abnormality Check if 24 VAC power has been supplied to R
and C terminals.
Check if TB4 and TB5 terminals have not been
opened.
Check F1U fuse.
AA-03 Gas Furnace Abnormality The gas furnace has had any error. Check 7
segment LEDs on the gas furnace PCB.
Error code Description Solution